European Watch Clock and Jewellery Fair 1989 BF 340
The world’s first ultrasonic timepiece is an absolutely transparent table clock that demonstrates the system’s constructional simplicity. Developed jointly by Demix Inc., of Japan, and Nepro S.A., of La Chaux-de-Fonds (Switzerland), this technology opens vast and promising perspectives in a variety of industries that now use traditional electromagnetic motors. (NEPRO S.A.)